Tennis: Sakkari upsets Venus Williams to reach Silicon Valley semis

August 4, 2018 (Mainichi Japan)

Maria Sakkari, of Greece, celebrates after winning a point against Venus Williams, of the United States, during the Mubadala Silicon Valley Classic tennis tournament in San Jose, Calif., on Aug. 3, 2018. Sakkari won 6-4, 7-6 (2). (AP Photo/Jeff Chiu)

Sakkari came back from 0-3 in the first set and 3-5 in the second set. She advanced to face American Danielle Collins -- with the winner reaching her first WTA final.

Collins, a two-time NCAA champion for Virginia, advanced after former world No. 1 Victoria Azarenka of Belarus retired midway through the second set due to injury.

Azarenka led 4-2 in the first set before needing a tiebreaker to win the 72-minutes set 7-6 (4). She grabbed her right leg in the opening game of the second set, lost the first three games and was evaluated by a trainer and doctor before retiring prior to the fourth game.

Mertens, a Belgian, saved two set points in the first set, forced a tiebreak and won four straight games in the second set for a 7-6 (4), 6-3 victory over Johanna Konta. It's Mertens' fifth WTA semifinal of the year.